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anematodeandDisservin
5eeca7392e
[STC](https://tests.stockfishchess.org/tests/live_elo/69cb991bc025c305b7daa219) LLR: 2.97 (-2.94,2.94) <0.00,2.00> Total: 47520 W: 12558 L: 12219 D: 22743 Ptnml(0-2): 190, 5474, 12102, 5795, 199 [LTC](https://tests.stockfishchess.org/tests/live_elo/69cc6b42731dfb72d2e92128) LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 123756 W: 31996 L: 31497 D: 60263 Ptnml(0-2): 81, 13512, 34221, 13955, 109 Adds features for pawns pushing against other pawns. For indexing, we use the existing threats feature set by adding the forward square to the squares threatened by a pawn. This threat is only enabled when another pawn occupies that square. We then add appropriate logic changes in `update_piece_threats` and `features/full_threats.cpp`. The wonderful Ciekce (of Stormphrax) and peregrine (of Reckless) also had similar ideas with adding forward pawn movements to TI, and I appreciate their giving me motivation to figure out `nnue-pytorch` and test it. closes https://github.com/official-stockfish/Stockfish/pull/6694 Bench: 2926703
59 lines
1.9 KiB
C++
59 lines
1.9 KiB
C++
/*
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Stockfish, a UCI chess playing engine derived from Glaurung 2.1
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Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
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Stockfish is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Stockfish is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef EVALUATE_H_INCLUDED
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#define EVALUATE_H_INCLUDED
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#include <string>
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#include "types.h"
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namespace Stockfish {
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class Position;
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namespace Eval {
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// The default net name MUST follow the format nn-[SHA256 first 12 digits].nnue
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// for the build process (profile-build and fishtest) to work. Do not change the
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// name of the macro or the location where this macro is defined, as it is used
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// in the Makefile/Fishtest.
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#define EvalFileDefaultNameBig "nn-7bf13f9655c8.nnue"
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#define EvalFileDefaultNameSmall "nn-47fc8b7fff06.nnue"
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namespace NNUE {
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struct Networks;
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struct AccumulatorCaches;
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class AccumulatorStack;
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}
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std::string trace(Position& pos, const Eval::NNUE::Networks& networks);
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int simple_eval(const Position& pos);
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bool use_smallnet(const Position& pos);
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Value evaluate(const NNUE::Networks& networks,
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const Position& pos,
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Eval::NNUE::AccumulatorStack& accumulators,
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Eval::NNUE::AccumulatorCaches& caches,
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int optimism);
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} // namespace Eval
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} // namespace Stockfish
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#endif // #ifndef EVALUATE_H_INCLUDED
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